Recent questions in Chemistry

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What are the functional groups present in an unknown organic compound that has an IR spectrum showing a strong absorption band at 1730 cm^-1 and weak bands at 2960 cm^-1 and 3300 cm^-1? Identify the possible functional groups and explain the reasoning behind your identification.

asked Jan 30 in Analytical Chemistry by KarolynMaddo (310 points)

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1 answer 74 views

What are the functional groups present in an unknown organic compound and what are their characteristic infrared absorption frequencies as determined through infrared spectroscopy analysis?

asked Jan 30 in Analytical Chemistry by KristenBever (510 points)

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1 answer 59 views

What are the functional groups present in a given organic compound and how can they be identified using infrared spectroscopy? Provide a step-by-step explanation of the process involved in analyzing the infrared spectrum of the compound to determine the functional groups present.

asked Jan 30 in Analytical Chemistry by ZCUHannelore (320 points)

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1 answer 42 views

Using X-ray diffraction, determine the chemical composition of an unknown mineral sample.

asked Jan 30 in Analytical Chemistry by RegenaMannin (210 points)

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1 answer 57 views

Using X-ray diffraction, analyze the crystal structure and determine the chemical composition of an unknown mineral sample provided.

asked Jan 30 in Analytical Chemistry by LoriBrass78 (280 points)

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1 answer 85 views

Using the melting point determination technique, determine the purity of a sample of aspirin and compare it to the expected melting point range for pure aspirin. Additionally, propose possible sources of error in the experiment and suggest ways to minimize them.

asked Jan 30 in Analytical Chemistry by SheltonHerve (450 points)

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1 answer 78 views

Using the data obtained from a nuclear magnetic resonance spectroscopy experiment, identify the structure of an unknown organic compound with a formula of C10H12O3.

asked Jan 30 in Analytical Chemistry by MOTHelene86 (590 points)

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1 answer 84 views

Using polarography, determine the concentration of lead ions (Pb2+) in a drinking water sample obtained from a home in a certain locality.

asked Jan 30 in Analytical Chemistry by AngelitaMark (230 points)

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1 answer 86 views

Using nuclear magnetic resonance spectroscopy, determine the structure and functional groups present in an unknown organic compound with a molecular formula of C10H12O2.

asked Jan 30 in Analytical Chemistry by ShelaHodel3 (330 points)

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1 answer 81 views

Using nuclear magnetic resonance spectroscopy data, how can you identify the structure of an unknown compound and determine the number and environment of hydrogen atoms present in that compound?

asked Jan 30 in Analytical Chemistry by CharoletteFa (490 points)

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1 answer 67 views

Using mass spectrometry, identify the unknown compound X given the following key mass spectral data: molecular ion peak at m/z 112, base peak at m/z 91, and characteristic fragment peaks at m/z 73 and m/z 57. Provide a molecular structure proposal for compound X based on the mass spectral data.

asked Jan 30 in Analytical Chemistry by FrederickD49 (380 points)

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1 answer 73 views

Using mass spectrometry, analyze and identify the unknown compound given to you by comparing its mass spectrum with the known compounds in the database. What is the molecular weight and functional group of the unknown compound?

asked Jan 30 in Analytical Chemistry by DianThomsen (400 points)

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1 answer 85 views

Using liquid chromatography techniques, determine the concentration of caffeine in a given sample of coffee and compare it with the recommended safe limit for human consumption.

asked Jan 30 in Analytical Chemistry by RonnyWicker3 (360 points)

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1 answer 66 views

Using infrared spectroscopy, identify the functional groups present in a given compound and explain their characteristic peaks in the spectrum.

asked Jan 30 in Analytical Chemistry by QYWDoris2851 (460 points)

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1 answer 83 views

Using infrared spectroscopy, characterize the functional groups present in a compound labeled as unknown X. Compare the IR spectrum of unknown X with the spectra of known compounds and identify the functional groups present in unknown X.

asked Jan 30 in Analytical Chemistry by LanoraRodger (390 points)

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1 answer 51 views

Using an ion-selective electrode, a student measures the concentration of chloride ions in a solution as 0.20 M. The solution also contains either nitrate or sulfate ions. How can the student determine which ion(s) is present in the solution and calculate their concentration?

asked Jan 30 in Analytical Chemistry by GraceKlass7 (350 points)

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1 answer 58 views

The question for the chemistry student to solve is: What is the percentage composition of the minerals present in a rock sample using X-ray diffraction technique?

asked Jan 30 in Analytical Chemistry by EloiseMorshe (490 points)

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1 answer 76 views

The problem for the student to solve could be: Using Nuclear Magnetic Resonance (NMR) spectroscopy, determine the molecular structure and functional group(s) present in an unknown organic compound with a molecular formula of C4H8O2.

asked Jan 30 in Analytical Chemistry by MabelVargas (510 points)

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1 answer 94 views

The problem can be stated as follows: A mixture of three solvents, A, B, and C, is provided. The composition of the mixture is unknown but it is suspected that solvent C is present only in small quantities. Using gas chromatography, how can you determine the relative amounts of each solvent in the mixture and confirm the presence of solvent C in the mixture?

asked Jan 30 in Analytical Chemistry by GabrielaChip (350 points)

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1 answer 75 views

Suppose you are given a sample containing an unknown concentration of copper ions. Using colorimetry, how would you determine the concentration of copper ions in the sample? Provide a step-by-step procedure and explain the principles behind each step.

asked Jan 30 in Analytical Chemistry by RXQRich69430 (270 points)

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